Currently, when you're on a forum page on mobile, for each thread there is a timestamp of when the last post was. Oftentimes users will actually remember *who* posted last, not necessarily what time it was posted. It would be helpful to add the username to this area. Note: in landscape mode, XF is inconsistent due to the varying pixel counts of smartphones. On all iPhones (even 5/5s longer ones), the last poster is not shown. However, in landscape mode on my HTC One, it is wide enough that the layout changes to show the last poster.